Class VersionNotSupportedError

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

org.a2aproject.sdk.spec.A2AError

org.a2aproject.sdk.spec.A2AProtocolError

org.a2aproject.sdk.spec.VersionNotSupportedError

All Implemented Interfaces:

Serializable, Event

public class VersionNotSupportedError
extends A2AProtocolError

A2A Protocol error indicating that the A2A protocol version specified in the request is not supported by the agent.

This error is returned when a client specifies a protocol version (via the A2A-Version service parameter) that the agent does not support. Agents should return this error when they cannot handle the requested protocol version.

Corresponds to A2A-specific error code -32009.

Usage example:

// In agent implementation
if (!isSupportedVersion(requestedVersion)) {
    throw new VersionNotSupportedError(null,
        "Protocol version " + requestedVersion + " is not supported", null);
}

See Also:

• for supported version declaration
• A2A Protocol Specification
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
VersionNotSupportedError(@Nullable Integer code, @Nullable String message, @Nullable Map<String,Object> details)	Constructs an error when the requested protocol version is not supported.

Method Summary

Methods inherited from class A2AError

getCode, getDetails

Methods inherited from class Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

VersionNotSupportedError

public VersionNotSupportedError(@Nullable Integer code,
 @Nullable String message,
 @Nullable Map<String,Object> details)

Constructs an error when the requested protocol version is not supported.

Parameters:

code - the error code (defaults to -32009 if null)

message - the error message (defaults to standard message if null)

details - additional error details (optional)